You guys do realize that they are elevated in real life right?
What difference does it make ? We have several sceneries right now on sale that never had elevated taxiways, while their real life counterpart have them.
When we DO have elevated taxiways in a scenery, like in KDFW, JFK V2, KLAX, CYVR, we clearly indicates it as a feature in the features list, so you can decide if the feature list satisfies you enough in order to purchase the scenery. Nowhere in the feature list for O'Hare we say the scenery is supposed to have elevated taxiways.
And of course, we offer full working Trial version of everything so, even if you don't check the feature list published on the website, you can install and check the scenery, and if the lack of such feature is so important to you, it would be very obvious to you when installing the Trial version, so you can always decide not to buy the scenery, and eventually wait for an updated version.